Adjustment Method of Crossbeam Synchronous Balance for NC Moving Beam Gantry Machine Tool

An adjustment method and crossbeam technology, which is applied to metal processing machinery parts, large fixed members, maintenance and safety accessories, etc., can solve problems affecting the positioning accuracy of machine tools, weight offset, damage to mechanical components, etc., and achieve a stable crossbeam synchronous balance adjustment , Eliminate the effect of over-tolerance inclination and no pressure impact

CN103481112BInactive Publication Date: 2016-01-13SUZHOU JIANG YUAN PRECISION MACHINERY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2016-01-13
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a method for synchronously adjusting the balance of a transverse beam of a numerical-control gantry machine tool with the movable beam. The method has the advantages that the pressure of an oil cylinder is linearly adjusted via an electro-hydraulic proportional valve, and a Y-axis sectioned compensation mode is adopted, so that the pressure which is applied by a ram milling head to the oil cylinder is gradually compensated when the ram milling head moves on the transverse beam, the balance of the transverse beam can be synchronously and stably adjusted, pressure impact is prevented, the transverse beam movement positioning precision is unaffected by gravitational unbalance loading caused by the fact that the ram milling head moves along the transverse beam, the transverse beam can run stably, and a phenomenon of out-of-tolerance of inclination can be effectively prevented.
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Description

technical field

[0001] The invention relates to the technical field of design and manufacture of beam synchronous balance adjustment of a numerically controlled beam gantry machine tool. Background technique

[0002] At present, my country's machine tool manufacturing industry is developing rapidly, and there are many large machine tools, such as: large moving beam gantry machining centers, large floor boring and milling machines and other machine tools. In order to ensure that the CNC machine tools, especially the vertical slides and beams of the gravity axis (the Z axis of the vertical CNC machine tool, the Y axis of the horizontal machining center, and the W axis of the moving beam gantry machining center), have a stable processing state and fast response speed, Large and medium-sized CNC machine tools require a gravity axis vertical slide plate and a beam balance device to eliminate the influence of the vertical slide plate and beam’s own weight on its movement accuracy ...

Examples

Embodiment Construction

[0018] Preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0019] see figure 1 , the present invention provides a method for adjusting the synchronous balance of a crossbeam of a CNC moving beam gantry machine tool. The CNC moving beam gantry machine tool includes a left column, a right column and a beam that can move up and down. Head 7, the numerically controlled beam gantry machine tool also includes a PLC analog output module 1, a PID control board 2, a proportional valve amplifier 3, an electro-hydraulic proportional valve 4, an oil cylinder 5, and a pressure sensor 6 connected in sequence. The output end is connected to the PID control board 2 to form a closed-loop control. Wherein, the proportional valve amplifier 3 includes a left proportional valve amplifier and a right proportional valve amplifier respectively connected to the PID control board 2 . The electro-hydraulic proportional valve...